Sewing-machine attachment.



PATENTED JUNE 25, 1907.

E. D. HARRIS. SEWING MACHINE ATTACHMENT.

APPLICATION FILED JAN. 3. 1907.

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UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed January 3, 1907- Serial No. 350,625.

.To all whont it 771/14 concern.-

Be it known that I, ELLA D. HARRIS, a citizen of the United States, and a resident of the city of New York, (borough of Brooklyn,) in the county of Kings and State of New York, have invented a new and useful Improvement in Sewing-Machine Attachments, of which the following is a full, clear, and exact description.

he purpose of the invention is to provide an attachment to sewing machines whereby to produce what is known as a brier, or herringbone stitch, and to construct such an attachment so that it can be adapted to any type in a sewing machine, and that it will be automatic in acti m and simple and economic in construction.

It is also a purpose of the invention to provide an attachment of the character described, which will by means of the above mentioned stitch, evenly connect two pieces of fabric as readily as producing the stitch upon a plain surface; and further, to provide means whereby a cord can be simultaneously fed along the line of stitching while the latter is being made.

i The invention consists in the novel con j struction and combination of the several ip'arts as will be hereinafter fully set forth and pointed out in the claims.

eference is to be had to the accompany ing drawings-forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improved attachment applied to the needle bar and presser foot bar of a sewing machine; Fig. 2 is a sectional plan view of the parts shown in Fig. 1; Fig. 3 is a sectional side elevation of the attachment employed to lay a cord along the line of stitching; Fig. 4 is a horizontal section taken practically on the line 44 of Fig. 3; Fig. 5 is a section through that portion of the attachment that feeds the fabric to produce the herringbone stitch; Fig. 6 is a bottom plan view of the modification shown in Fig. 7; Fig. 7 is a partial sectional side elevation of the modified form of the barrel whereby the spaces between the points of the stitch can be lengthened or shortened; Fig. 8 is a planview of a portion of a fabric showing two sections connected by the her ringbone stitch; and Fig. 9 is a plan view of a sists of a vertical member 10, an upper horizontal member 11, and a longer, lower horizontal member 12, and at the inner end of the longer, lower horizontal member 12, guide jaws 13 are provided for a feed arm F, to be hereinafter described. The lowermember 12 of the said yoke-shaped bracket is provided .with a socket member 14 that extends up from it and is adapted to receive the presser foot bar C as is shown in Fi s. 1 and 2, the said socket member being heTd in adj ustable relation to the presser foot bar C by means of a set screw 14, or its equivalent. The aforesaid yoke-shaped bracket is adapted to receive a barrel D that is mounted to revolve in the said bracket. This barrel is provided with an upper trunnion 15 that enters a slot in the upper member of the aforesaid bracket, as is shown in Figs. 1 and 2, and the trunnion is held in place by means of a pivoted hook 18, or like device, renderin the barrel D removable. The said barrel is provided at its lower end with preferably a conical shaped trunnion 16, and between this trunnion and the bottom of the barrel a cam 17 is formed preferably integral with the barrel, as is shown in Fig. 1. As stated the barrel D is free to turn in its support and the said barrel is provided with opposing longitudinal grooves designated as 19 and 19*, which grooves extend the length of the barrel and in addition to the longitudinal grooves 19 and 19 which are straight, diagonal or spiral grooves 20 and 20 duced in the said barrel, one above the other, and the said diagonal or spiral grooves 20 and 20 connect the vertical grooves 19 and 19.

Where the lower end portions of the spiral grooves 20 and 20 cross or intersect the straight grooves 19 and 19, a flange or projection 21 is formed at the upper wall of each of said diagonal grooves so that a springcontrolled pin can travel down the straight grooves 19 and 19 and slip by the flanges 21 formed as stated at the lower ends of the are pro- I spiral grooves '20and but when such pin shall have reached the lower portion 0 a longitudinal groove 19 or 19, as the said pin ascends it will of necessity travel from the straight groove down whichit passed into a spiral groove 20 or 20 and into the opposing straight groove, thus imparting to the barrel D a partial revolution; This action of the barrel is brought about in the following manner: A block E is secured to the needle .bar 0 by means of a set screw 22, or like device. This block at the. end that is opposite the barrel D is provided with a chamber 23, in which chamber the head of a pin 24 is entered, the pin being suitably secured for horizontal sliding movement against a spring 25 which is located in said chamber23, and this pin 24 is the pin that travels in the grooves of the barrel D, imparting thereto a partial revolution at each up and downward movement of the needle bar 0.

The feed arm F, above referred to, consists of a body member 26 that extends over the lower member 12 of the supporting yoke for the barrel D, and where the said body portion 26 of the feed arm F is located over the lower portion of the barrel yoke, the said body portion of the feed arm is straight, as is shown in Figs. 1 and 2. Then the said body portion of the feed arm F is given preferably an upward curvature, as is illustrated at 26 in Figs. 1 and 2; then the said feed arm is straight, but at its inner end the feed arm is curved downward and outward, as is shown at 29 in Fig. 1.

The curved portion 29 of the feed arm F is secured in any suitable or approved manner-to a spring strip 30 which is a continuation of the feed arm F, extending outward be neath the straight section of the body 26 of said arm to a point near where the body portion of said feed arm approaches the barrel D. -The spring strip 30 is practically a guide strip and a spring feed strip or member 31 acts in conjunction with the guide strip 30. This spring feed strip 31 is secured to the under face of the inclined section 26 of thebody portion 26 of the feed arm F, and its outer or opposing end bears loosely upon the upper face of the guide member or strip 30 near its free end and the free end of the feed strip 31 is provided with teeth or serrations 32, since the material to be stitched is .passed between the serrated portions 32 of the feed strip or member 31 and the opposing faces of the guide strip or member 30, as is shown in Fig. 5, the material in said figure being designated as 33.

At the outer end of the body portion 26 of the feed arm F, an elongated eye 27 is formed that receives the cam 17 of the barrel 1), and said feed arm F is guided in addition to the jaws 13 by means of a finger 28 that extends from the eye portion 27 of the feed armout through a suitable: opening in the vertical member 10 of the support bracket in the barrel D, as is shown in Figs. 1 and 2. Thus it will be observed that the rotation of the barrel D, imparts a laterally reciprocating movement to the feed arm F, and such movement causes the material 33 to be shifted alternately to and from the barrel D in a lateral direction, while the ordinary feed of the machine will carry the material outward from the machine in the' customary manner.

The needle CT passes down through the usual opening 35 in the needle and feed plate B which is of the customary type. In order that the movement of the feed arm F shall be perfectly free a wear plate 33 is made to extend partially around the needle and feed plateB, as is shown in Figs. 1 and 2, and a tongue 34 extending from the said wear plate 33 extends also over the combined needle and feed plate B, having an opening therein corresponding to the opening in the plate B for the needle and a slot for the up* ward extension of the ordinary feed. This wear plate 33 is very smooth and the guide member 30 of the feed arm F slides thereon. It is obvious that the reciprocating move ment of the feed arm F will cause the stitch to be of the herringbone or brier type, as is shown in Fig. 8f

It frequently happens that two separate pieces of material 39 and 39 are to be connected by the stitch 40, as is shown in Fig. 8, and at such time the space 38 between the two strips 39 and 39 should be of uniform width throughout. To accomplish this result, a spring guide arm 36 is secured at one of its ends to the outer straight portion of the body member 26 of the feed arm F at the upper face of the latter, and this guide arm 36 is provided at its forward end with a finger 37 that extends down in the space between the body member 26 of the feed arm F, and the lower member 12 of the support bracket for the barrel D and this finger travels in the space 38 between the two strips 39 and 39, acting as a spacer for said pieces.

When the stitch is to be produced upon a single piece of goods the gage or guide finger 37 is not required, and is at such time held up out of the way. This can be accomplished in various ways, as illustrated. A bolt 41 is mounted to turn beneath the spring guide 36, which bolt is provided with a handle 42 and an extension member 43. When the finger 37 is to be raised the bolt 41 is turned in a manner to bring its extension member 43 uppermost, thus holding the finger 37 out of the path of the material.

It is also an object of this invention to provide-means for laying a cord 54 on a strip of material 53 for example, as is shown in Fig. 9, while the herringbone stitch is being made. This device is illustrated in Figs. 3

and 4, and difi'ers only from the construction hereinbefore described, that is with reference to the barrel D and its bracket support, in that the lower member 12 is shorter than the member 12 shown in Figs. 1 and 2, and the said lower member 12 is provided with a socket member 14 that receives the presser foot bar C of the machine, being attached to said bar by a set screw or equivalent de A cord carrying arm 47 is employed in connection with the barrel D, and this cord car rying arm is provided with an elongated eye 48 corresponding to the eye 27 in Fig. 1, which eye 48 receives the cam 17 at the lower end of the barrel D thereby to reciprocate the said cord carrying arm and this carrying arm 47 is provided with an extension member 49 that is carried out through the upright member 10 of the barrel support, the member 49-of the cord carrying arm corresponding to the member 28 shown in Fig. 1. This cord carrying arm 47, at its forward end, is curved downward and terminates in a foot, said foot being designated as 51, and in this foot an opening 52 is produced through which the cord passes. The said cord carrying arm is provided with a longitudinal slot 50 and a guide finger 5O extends up from the lower member 12 of the bracket support for the barrel through the said slot 50, as is shown clearly in Figs. 3 and 4, preventing the cord carrying arm 47 from having side motion in operation, and it may be here remarked that a recess 55 is made in the short lower member 12 of the said bracket support, as is particularly shown in Fig. 4, for the passage of the needle.

The stitch in this construction is the ordinary stitch, that is to say it is a straight stitch, but the inlaid cord 54 imparts to the stitch the herringbone or brier effect shown in Fig. 9. The cord passes from a reel or other source of supply and is carried through the opening 52 transversely beneath the foot 51 of the cord carrying arm, thus as the barrel D is revolved the needle is forced to pass first at one side of the cord and then at the opposite side, as the said needle carries the thread through the material.

In Figs. 6 and 7 I have illustrated a slight modification of the device in that provision is made for regulating the distance between the points of a stitch 40. This is accomplished by providing a cam 44 at the bottom of the barrel D having an opening 45 therein, the cam 44 being unattached to the barrel and a screw 46 is passed through the pivoted portion 16 of the barrel D and through the cam lengthwise of its opening 45, thus by adjusting the screw 46 the cam 44 can be brought nearer to or farther from the center of the barrel D as may be required.

Having thus described. my invention, I

claim as new and desire to secure by Letters Patent,

1. In a sewing machine, the combination with a barrel, a support in which thebarrel revolves, and means for imparting rotary motion to the barrel by the movement of the needle bar of the machine, of a feed device therefor, a feed adapted to feed material at an angle to the line of feed of the machine, comprising an upper gripping member and a lower guide member, and connections between .the two at a point beyond the feed bar, means for operating the feed bar from the said barrel, a device attachable to the needle bar for imparting rotary movement to the barrel, a spacing device for the material operated on, and means for bringing the spacing device into and out of action.

3. In a sewing machine, the combination with the needle bar, and the presser foot bar, of a support secured to the presser foot bar, a barrel mounted to revolve in said support, the said barrel being provided with opposing longitudinal grooves and connecting spiral grooves, a spring controlled finger connected with the needle bar and adapted to travel in the grooves of the barrel, a feed bar, means for reciprocating the feed bar by the rotation of the barrel, the feed bar being provided with means for holding material and having a movement at right angles to the movement of the regular feed.

4. In a sewing machine, the combination with the needle bar and presser foot bar, a support attached to the presser foot bar, a barrel mounted to revolve in the said support, means for imparting a rotary movement to the barrel at the'up movement of the needle bar, and a cam located on the sa d barrel, of a feed bar provided with an elongated opening to receive the said cam, Whereby to impart a reciprocating movement to the feed by the rotation of the barrel, a clamping device for the material carried by the feed bar, and a spacer for material likewise carried by the feed bar.

5. In a sewing machine, the combination with the needle bar and presser foot bar, a support attached to the presser foot bar, a barrel mounted to revolve in the said support, means for imparting an oscillating movement to the barrel at the up and down movement of the needle bar, and thecam located on the said barrel, of a feed bar pro IIS .uvided with an elongated opening to..receive the said cam, whereby to impart areciproreating movement to the feed bar by the rotation of the barrel, ecla'nming device for material carried by the feed bar, a spacer for material likewise carried by the feed bar, v. guidesf-onthe feed'bar andmeans fonraising and. lowering the said spacer.

i: In testimoriy. {whereof -I'--have: signedmy .name to this-specification in thepresence of two subscribing Witnesses.

- ELLA DfHAR'RIS.

Witnesses uh-LEONA IL QART VIOTJA' H; PIKE. 

